I see Dybala finishing his time at Juventus in 15 months time.
A mega bid from England or Spain, even Bayern, are highly likely.
Assuming he stays fit, scores plenty of goals in the 17/18 season for us, then he is likely to be sold for €100,000,000+ especially as we will put a release clause in his new contract demanding a suitably hefty fee.
By the time he leaves, there is every likelihood that he will have been a major player in Juventus winning 7 scudetti on the spin.